Wrench with threaded nut holding member



Feb, 15, 1949.7 P. T. couslNo WRENCH WITH THRADED NT HOLDING MEMBER I Filed July 16, 1945 INVENToR. 7312177011/ 7. bua 2' 720 BY yww 4 4, ...|h..| l: {QJJMMM -KIL ILI Patented Feb. 15, 1949 MEMB Patrick T. Cousine, Detroit, Mich., assignor to Chrysler Corporation,A Highland Park, Mich., a

corporation of Delaware Application July 16, 1945, Serial No. 605,250

2 Claims. (Cl. 81-90) wrench with the nut to facilitate turning; and

to provide .means for automatically disengaging the nut supporting means from the nut during the operation of applying the nut to the threaded member.

Another `object of the invention is to provide 'l a Wrench which has a diameter no larger than the width of the nut so that the wrench can be used in a recess of a width just sucient to receive the nut.

A further object of the invention is to provide a wrench having a reciprocating member therein provided with a threaded end portion for screw thread engagement with the nut-.and to split the threaded end portion longitudinally to permit inward springing of the threaded portions formed by the split.

Other objects and advantages of the invention will more fully appear from the following description taken in connection with the accompanying drawings in which:

Fig. 1 is a side elevational view of the wrench in a recess in position for applying a nut to a bolt extending through parts shown in section to be joined;

Fig. 2 is a sectional View taken on line 2-2 of Fig. 1; e

Fig. 3 is a fragmentary sectional view corresponding to Fig. 1 but showing the nut in its nal position for tightly holding the parts together; and

Fig. 4 is a sectional View through the nut taken on line 4-4 of Fig. 2 and showing an end View of the wrench.

Referring to the drawings there is shown an application of the wrench to a nut for securing a channel member I to a frame I2. A screw threaded bolt I4 is inserted in aligned openings in the channel I0 and frame I2 with the threaded end received in the recess I6 of the channel.

The wrench comprises a tubular body portion,

I8 having one end provided with a plurality of axially extending projections which are spaced apart around the circumference of the endwall. The opposite end of the tubular body portion I8 is provided with at surfaces 22 on its outer periphery for the reception of a tool 24 having an opening corresponding to the flat surfaces on the tubular body portion for turning the latter.

A rod 26 is slidably mounted in the tubular body portion I8. One end of the rod 26 projects beyond the end of the -body I8 and receives a head -28 screw threaded to the end of the rod 216. This head serves as a stop vagainst the end of the body I8 for limiting the inward axial move-l ment of the rod 26. A shoulder 30 on the rod 26 forms a stop for`engagement with an axially spaced shoulder 32 in the inner wall of the bodyIB.

The opposite end of the rod 26 projects slightly beyond the outer end of the projections 20 and is screw threaded perferably with a V-shaped thread. The threaded end of the rod is bifurcated by an axially v.extending slot 34 in the end of the rod 26 providing a pair of resilient segments 36 and 38. The opposite faces of the screw threads, adjacent the edges of the slot 34, are machined away as shown at 40 thus providing partially threaded segments 36 and 38 which may be sprung inwardly to reduce the overall diameter of the threaded portion of the segments.

The nut 42, to be received on the bolt I4, is shown in the form of a castle-nut having a plurality of circumferentially spaced projections 44 which may be received in the spaces between the projections 20 on the end of the tubular body portion I8 when the nut 42 is threaded on the end of the rod 26.

In operating the tool the rod 26 is in the posi- Ition shown in Figs. 1 and 2 with the head 28 in engagement with the upper surface of body portion l8- and the'threaded segments 36 and 38 projecting slightly beyond the outer ends of the projections 28. The nut 42 is then positioned with itsA projections 44 facing the spaces between the projections 20 -on the body I8 .and the rod is rotated by turning the head 28 so that the threads on the segments 36 and 38 are threaded into the nut 42, thereby drawing the nut 42 toward the end of the body portion I8 and providing a means for temporarily holding the nut on the body portion. This operation only requires a few rotations of the rod 26 to draw the projections 44 into the spacesbetween the projections 20 until the nut 42 tightly engages theV end of the body portion I8. The threaded segments 36 and 38 enter the threaded nut partially. This distance of entry may be predetermined by adjustment of the head 28 axially on the rodv 26.

The nut 42 is now securely held at the end of the Wrench and since the wrench is of a diameter corresponding substantially to the width of the nut, it may be inserted in a recess of relatively small dimension substantially equal to the maximum width of the nut. The body portion I8 is then turned by the tool 24 and the nut is also turned with the body portion because of the inter-engaging projections 2Q and 44. The turnilrg causes' the-'nut 42 to ,be threaded on the bolt When the nut 42 is threaded on the bolt Ht far enough to cause the end of the rod 26 to comeA into engagement with the endfof'the-b'olt,I I4, con-r tinued turning causes the bolt I4 to apply force tending to move the rod 2t axially. v'This axial force reacts upon the inclind 'surfaces ofthe co!V operating rod and nut threadsA 'to apply a force having a transverse component tending to delfleet the segments 3B and 38 inwardly-'-he slot 34 allows the segments to deflect inwardlyv out'of threaded engagement With the end ofthe nut. This `frees the rod 26v and the bolt end may pass interne-operi ene-ofthe body' poniente 'pushing tl-e-'rodjZB outwardly as illustrated in Figyf. from the'ioreg'oing itiWill be understood that I hafeiprovided" ai'wrench Whichirnay be inserted inbores orrecessesfbt'suchisize as to'be 'able 4to reteiveonlyji tools rif-the same diameter as4 the nut, 'one dinLwlfiich the nutk may be'ternporarily secured toth'e :Wrench for positioning the nut in extremely--'close quarters;-and one in which the nut isf'automatically disengaged from the 'wrenchl `-It Williebewapparentthat-'shapeof the nut 42 circuiferentiallyl- Vis unimportant inasmuch as the tool engages the end of the nut. Therefore, the-nut maybe" sduarefhexagonal," round; or any desired shape;l It is,`^'-ofA -bo`urse,-"des'ired to 'pro--A vide some form of torque transmitting connection betWeen-'th'eftool' and end of'the'nut such-that the :r'iut"may bev rotatedY into'pos'ition by the toolf "It Will beunderstood"thatvarious changes including the Asi'zejshape; andlarrangeme'nt of parts maybe made Without departing from the spirit of*myinvention,'andl it isznot my'inten'tion to limiti-'its scope otherfthan by the terms ofthe appended claimsfifi ""1 Ivclaim:

1i. =A^Wiench comprising a tubular shank hav- 4 ing a diameter substantially equal to the width of a nut with which the wrench is to be used, means at one end of said shank for engagement with the nut to permit turning thereof by turning of said shank, a rod axially slidable in said shank and projecting slightly beyond the nut engaging vmeans on said. shank, interrupted threads on theifrojectingffend f )said riod, said rod end havingl a longitudinal split therein to provide resilient segments carrying the threads, means at the opposite end of said shank for turning said .rod,`a`-n'dsto'p means between said shank and rod for limiting the axial movement of said rod relative to -saidshank.

l 2. AWrench-,comprising a body portion, means at oneend of said-body portion for engagement with a nut to cause rotation of the nut in respo'n'setdrotationbf said body portion, a threaded element slidably mounted in said body portion and adapted to extend into threaded engagement `with said lnut to holdsaid nut inlengagenient with said meahsfpreparatory toap'pliication o'f the'nutto a' cooperating threaded 'inem-ber, said threaded element 'being provided Witrr'reL silient "segments 4carrying' the "threads, said` resilient segments being deectable to accommd'- date release oifsaid threaded "element from''jsaid nut when' said threaded member penetrates said nut sufcien'tly to 'n'gagesaid threaded element. i. ,PATRICK-T;,COUSINOCW REFERENCES @TEP The following references are oiecord in the le of this patent: "Umitg STATES PATENTS L; I "1,3, l Number Name y Date 1,281,928 Fieldji; Oct. 1,5, 19,13 1,478,503 Young Decs 25 1923 1,756,003 North r....- i- Apr. 22,; 1930 1,992,4:74v Currier r V1Eeb. 26,1935 2,264,573 Johnson et al. Dec 12 1941 Number M V' n Date 474,971 Germany i-- Apr. '16,1929 

